No, they are not relatively prime.
That's an infinite list that includes 30, 42 and 66.
30, 42, 66, 70, 78
30, 42, 66, 70, 78
30, 42, 66, 70, 78
How about the prime numbers of: 47+19 = 66
30, 42, 66, 70 and 78.
30, 42, 66, 70 and 78.
30, 42, 66, 70, 78
They are 30, 42, 63, 66, 70 and 78.
There is no product of prime numbers building 66. The sum of prime number is doing it: 13 +53 = 66